Pumping-lever.



PATENTED NOV. 8, 1904.

J. E. HUDSON.

PUMPING LEVER.

APPLIOATION FILED 110v. 12, 1903.

N0 MODEL.

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UNrrED STATES Patented November 8, 1904.

JOSEPH E. HUDSON, OF TOLEDO, OHIO.

PUMPING-LEVER.

SPECIFICATION formingpart of Letters Patent No. 774,475, dated November8, 1904.

Application filed November 12, 1903. Serial No. 180,802. (No model.)

T 0 all whom it may concern.-

Be it known that I, J OSEPH E. HUDSON, of Toledo, county of Lucas, andState of Ohio, have invented certain new and useful Im: provements inPumping-Levers; and I do hereby declare that the following is a full,clear, and exact description of the invention,

which will enable others skilled in the art.

to which it appertains to make and use the same, reference being had tothe accompanying drawings, and to the figures of reference markedthereon, which form part of this specification.

My invention has reference to a pumpinglever adapted for pumping oil orother deep wells; and it has for its object to provide simple,inexpensive, and easily-operated means for reciprocating the polish-rodand the pump-- rods connected therewith.

In carrying out my invention I provide novel means whereby thepumping-lever at its immediate point of attachment to the polish-rod iscaused to reciprocate in a straight line, thereby eliminating anytendency to pull the polish-rod in a lateral direction.

To'this end the invention consists in the novel combination andarrangement of the parts hereinafter shown, described, and defined inthe claims, reference being had to the accompanying drawings, in whichFigure l is a side elevation showing the arrangement and application ofmy invention,

the stationary frame being partly broken away. Fig. 2 is a plan view ofthe operatingarm of the lever, showing the construction for guiding thesame in the frame.

Referring to the parts, the stationary frame consists of the upperhorizontal bars 1 and 2, suitably spaced apart and supported at theirforward ends by braces 3 and at their rear ends by braces a, the formerbeing preferably connected to the casing-head, the latter being securedand supported upon a suitable base resting upon the ground, the lowerends being spread apart to insure rigidity.

5 is an upright arm formed by two parallel bars spaced apart andfulcrumed at its upper end at 6 to the stationary frame, a suitablecasting 7 being provided for this purpose.

8 is an operating-arm, pivoted at one end to the lower end of theupright arm 5, and the upper end of said arm is slidably mounted andguided between the forward ends of the bars 1 and 2,antifriction-rollers 9 and 10 being provided on opposite sides thereofto facilitate its movement and to maintain the same in proper position.The portion of the arm 8 adapted to operate between the rollers 9 and 10is bent in an unbroken curve in a rearward direction, the form of thecurve being such that the free end 11 of the arm 8, engaging thepolish-rod, travels in a straight line. This engaging end is bifurcatedor recessed at 13 to receive the polish-rod 14:.

l5 and 16 are collars arranged upon the polish-rod, being secured inplace by setscrews, the end 11 of the arm 8 taking a position betweenthem. The upper and lower faces of the end 11 of the arm 8 arearc-shaped to insure contact with the collars upon the polish-rod.

At its lower end the upright arm 5 is provided with a casting 17,arranged with equidistant perforations 18 for the attachment of asurface rod, the length of the pump-stroke being thereby adjusted.

From the foregoing description the improved operation of my inventionshould be understood. In Fig. 1 the extreme raised and lowered positionsof the operating-arm and the correspondingly-altered positions of thevertical arm are shown in dotted lines a and b, respectively, the sameillustrating the operation of the invention. Tlhearrangement disclosedis simple, inexpensive, easily operated, being capable of operation witha minimum expenditure of power.

The novelty, utility, and advantagesof the invention will be apparent.It will be appreciated that the parts and general arrangement of thestructure may be modified within a Wide range Without departing fromthespirit and scope of my invention. For instance, I

may arrange curved guideways immovably secured upon the stationary frameand provide a roller or rollers upon the operatingarm to travel alongsaid guideways, both ar-, rangements being calculated to effect themovement of the engaging end of the operating-arm in a straight line.

Having described my invention, what 1 claim, and desire to secure byLetters Patent, is-

1. In apumping'lever, the combination with the polish-rod of a well, ofa stationary frame, an upright arm fulcrumed upon said frame, anoperating-arm pivoted at one end to said upright arm and adapted todirectly engage the polish-rod at its other end, and means for guidingthe operating-arm in its movement to cause the end thereof which engagesthe polish-rod to travel in a straight line, substantially as described.

2. 1n apumping-lever, the combination with the polish-rod of a well; ofa stationary frame, an arm fulcrumed on the frame, an operating-armpivoted to the lower end of said arm and having a curved portionslidably guided through the frame to cause the free upper end thereofwhich engages the polish-rod to travel in a straight upright line andits lower end to travel in substantially ahorizontal line, as and forthe purpose described.

3. In a pumping-lever, the combination with the polish-rod of a well, ofa stationary frame, an upright arm fulcrumed in said frame, anoperating-arm pivoted to the lower end of said upright arm and movabletherewith in substantially a horizontal line, said operatingarm having acurved portion extending through the frame and adapted at its upper endto engage the polish-rod and move in a vertical line therewith, androllers mounted upon the frame adapted to guide the operating-arm topermit said difierent movements of its opposite ends, substantially asdescribed.

In testimony that I claim the foregoing as my own I aiiiX my signaturein presence of two witnesses.

JOSEPH E. HUDSON.

Witnesses:

CARL H. KELLER, EDWARD O. MILLER.

